1 /* $NetBSD: cgdvar.h,v 1.10 2008/01/04 21:17:47 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Roland C. Dowdeswell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _DEV_CGDVAR_H_ 40 #define _DEV_CGDVAR_H_ 41 42 #include <sys/simplelock.h> 43 44 /* ioctl(2) code */ 45 struct cgd_ioctl { 46 const char *ci_disk; 47 int ci_flags; 48 int ci_unit; 49 size_t ci_size; 50 const char *ci_alg; 51 const char *ci_ivmethod; 52 size_t ci_keylen; 53 const char *ci_key; 54 size_t ci_blocksize; 55 }; 56 57 #ifdef _KERNEL 58 59 #include <dev/cgd_crypto.h> 60 61 /* This cryptdata structure is here rather than cgd_crypto.h, since 62 * it stores local state which will not be generalised beyond the 63 * cgd driver. 64 */ 65 66 struct cryptdata { 67 size_t cf_blocksize; /* block size (in bytes) */ 68 int cf_mode; /* Cipher Mode and IV Gen method */ 69 #define CGD_CIPHER_CBC_ENCBLKNO 1 /* CBC Mode w/ Enc Block Number */ 70 void *cf_priv; /* enc alg private data */ 71 }; 72 73 struct cgd_softc { 74 struct dk_softc sc_dksc; /* generic disk interface */ 75 struct cryptinfo *sc_crypt; /* the alg/key/etc */ 76 struct vnode *sc_tvn; /* target device's vnode */ 77 dev_t sc_tdev; /* target device */ 78 char *sc_tpath; /* target device's path */ 79 void * sc_data; /* emergency buffer */ 80 int sc_data_used; /* Really lame, we'll change */ 81 size_t sc_tpathlen; /* length of prior string */ 82 struct cryptdata sc_cdata; /* crypto data */ 83 struct cryptfuncs *sc_cfuncs; /* encryption functions */ 84 struct simplelock sc_slock; /* our lock */ 85 }; 86 #endif 87 88 /* XXX XAX XXX elric: check these out properly. */ 89 #define CGDIOCSET _IOWR('F', 18, struct cgd_ioctl) 90 #define CGDIOCCLR _IOW('F', 19, struct cgd_ioctl) 91 92 #endif /* _DEV_CGDVAR_H_ */ 93